HDAC4 and Alzheimer disease: These genes are involved in various frailty-related outcomes, including different types of cancer (i.e., HDAC4, CASP9, NFE2L3, RILP, STK40, HAO2, SNX20, MRTO4, EMILIN3, P4HA3), cardiovascular disease (i.e., HDAC4, CASP9, SARS), diabetes mellitus (i.e., RPL36AL, SARS), and Alzheimer’s Disease (i.e., RPL36AL).